A group of hackers who claimed to hold millions of iCloud accounts for ransom said on Friday they'd been paid. But one bitcoin expert says that's bogus.

The Turkish Crime Family grabbed headlines last month by claiming they had the stolen login credentials for more than 700 million icloud.com, me.com and mac.com accounts. They demanded increasing ransoms from Apple while threatening to wipe the data from devices connected to the affected accounts if it did not.

On Friday, the hackers tweeted that they had been paid US$480,000 in bitcoin. As proof, the group posted a link showing a transaction on Blockchain.info, a popular bitcoin wallet.